Differences between MELLANOX QDR 40 GB/s IB cards and FDR 56 GB/s IB cards

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QDR 40 GB/s IB cards and FDR 56 GB/s IB cards provide different transmission rates.

Other related questions:
Differences between TE30/40-C and TE30/40
Differences between the TE30/40-C and TE30/40 are as follows: Huawei TE30 Conference resolution of up to 1080p@30 fps Optical zoom of up to 12x Huawei TE30�CC Conference resolution of up to 720p30 Optical zoom of up to 8x Huawei TE40 Conference resolution of up to 1080p@60 fps Call bandwidth of up to 8 Mbit/s Huawei TE40�CC Conference resolution of up to 1080p@30 fps Call bandwidth of up to 4 Mbit/s Note: On the TE40-C, two HDMI OUT ports and the HDMI port (find it in the two PC IN ports) are disabled by default. They can be used only after a license file is imported.

What are the differences between TE30/40-C and TE30/40?
Differences between the TE30/40-C and TE30/40 are as follows: Huawei T30 Conference resolution of up to 1080p 30 fps Optical zoom of up to 12x Huawei TE30�CC Conference resolution of up to 720p 30 fps Optical zoom of up to 8x Huawei TE40 Conference resolution of up to 1080p 60 fps Call bandwidth of up to 8 Mbit/s Huawei TE40�CC Conference resolution of up to 1080p 30 fps Call bandwidth of up to 4 Mbit/s Note: On the TE40-C, two HDMI OUT ports and the HDMI port (find it in the two PC IN ports) are disabled by default. They can be used only after a license file is imported.

Differences between stack cards and extended rear channel cards of S series switches
The stack card and extended rear channel card of a switch use the same slot, and they cannot be installed simultaneously. Stack cards are used when switches set up a stack in stack card connection mode. The extended channel card of a switch must be used together with the front four-interface card. To enable a front card of a switch, an extended rear channel card must be installed. If not, only two front interfaces are available.

QDR
IB Quadruple Data Rate (QDR) is the communication rate defined by InfiniBand (IB). It is equivalent to 40 Gbps IB. The E9000 CX611 and CX610 switch modules support QDR and FDR autonegotiation.

What is the difference between a SIM card and a USIM card
A SIM card supports only 2G services. A USIM card supports both 2G and 3G services.

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